Return bend



June 12, 1934. J GETZENI 1,962,189

RETURN BEND Filed Dec. 29, 1932 2 Sheets-Sheet l ATTORNEY June 12, 1934. J, 1.; GETZEN 1,962,189

RETURN BEND Filed Dec. 29, 1932 2 Sheets-Sheet 2 Patented June 12, 1934 RETURN BEND John E. Getzen, Birmingham, Ala., assignor' to Fred C. Fantz, Webster'Groves, Mo.

Application December 29, 1932, Serial No. 649,299

3 Claims.

My invention relates to that class of devices which are used to connect adjacent tubes, in tube coils or nests, used in cracking apparatus. In

mit the replacement and inspection of tubes when.

dfiegi'ed, without having to destroy the adjacent t 1 It is-well known to operators in the refinery business that the tubes bow or sag and warp. By my improved construction it becomes possible to turn these warped tubes over thereby greatly increasing their life. It is also possible to re- 19 move them to a less hazardous portion of the still, thus increasing the life of the equipment.

My invention has for its principal object to provide ademountable tube securing housing in which the housing itself, as well as the return bend, may be quickly and easily removed, thus avoiding any difliculty or danger of the return bend sticking to the end of the tube due to coking. 'My means of accomplishing the foregoing object may be more readily understood by having reference to the accompanying drawings, which are hereunto annexed and are a part of this specification, in which .Fig. 1 is a side elevation of my improved device;

Fig. 2 is an end elevation of the same; 7

Fig. 3 is a cross section taken on the line 3-3 in Fig. 1; and

Figs. 4, 59nd 6 are detail views of the different parts of the invention.

Similar reference numerals refer to similar parts throughout the entire description. As shown in the drawings, I provide a return bend 1, which is of the conventional type, and is adapted to connect a pair of still tubes 2 and 3. These tubes are mounted in a plate 4, which has annular members 5 and 6 at each end. These annular members 5 and 6 are connected by a central web 7. The ends of the .tubesare upset as clearly seen in Fig. 1,'where the exterior wall is broken away so as to show the tube mounting.

Intermediate the shoulders formed by the upset portions of the tube and the interior wall of the annular portions, 1 mount a sectional metal ring or bushing. Each-of the annular members 5 and 6 are provided with radially extending lugs 65' 8 and 9, the lower surfaces of which taper downwardly as clearly seen in Fig. 2. I provide two pairs of arcuate side walls 10 and 11. These side walls are provided with slots 12 and 13, which are fitted to and adapted to registerwith the radially extending lugs 8 and 9 formed on the annular members.

Adjacent to the upper ends of the arcuate side walls '10,and 11 are formed slots 13 and 14, in which I mount toggles 16. In these toggles I place set screws 17, the inner ends of .which are 5 adapted to engage abutments 18 and 19 formed on the-external surface of the return bend 1.

The device is assembled in the following manner: The annular'members 5 and 6 are clipped". over theends of the tube, the metal bushings are inserted and the annular members 5 and 6 are moved back until the shoulders are locked with the shoulders on the bushing which engages shoulders on the inner wall of the annular members 5 and 6. 'I'hearcuate side walls are then placed so that the slots 12 and 13 engage the radially extending lugs 8 and 9. The return bend 1 is placed in position, the toggles 16 are slipped into the slots 14 and 15, adjacent the upper ends of the arcuate side walls. The set screws l'l are 30 tightened and this forces the return bend tightly against the ends of the tubes, forming a leak proof joint.

It will'be apparent that by loosening the set screws and pushing down on the side walls that 5 they will instantly be disengaged from the radial- 1y extending lugs when the side walls, toggles, and return bend 1, can be lifted quickly and easily from the ends of the tubes. This permits access to the interior of the poses, or if desired, thetubes can be withdrawn out ofeither of the annular members so as to either replace them in a differentuplace or put a new tube in or to turn them over in the event they have sa ged. Y

Having described by invention what I regard as new and desire to secure by Letters Patent is:-

-1. In a refinery apparatus, a conventional return bend adapted to connect a pair of still tubes to provide a passageway therethrough, a pair 109 of annular members each of which is adapted to encircle one of said tubes and be locked thereto, radially projecting lugs on said members, the

lower walls of said lugs taperingv downwardly,

means to connect said annular members, pairs of arcua'te side walls having slots which flt said lugs,

detachable means mounted in said side walls, set -screws therein to force said return bend into a leak-proofjoint- 2. In a refinery apparatus, a conventionalretubes for cleaning purv turn bend adapted to connect pair of still tubes to provide a passageway therethrough, shoulders on said tubes, a pair of annular members sectional metal bushings intermediate said annular members and said tubes, means to connect said annular members, pairs of arcuate side walls, one pair of each tube, means on said annular members which engage said arcuate side walls and detachable means mounted in the said side walls adjacent their upper ends, set screws mounted in said means, which engage said returrf bend to form a leak-proof joint.

3. In a refinery apparatus, a conventional reforce said return bend into a leakproof joint.

JOHN E. GE'I'ZEN. 

